// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package google.cloud.dialogflow.cx.v3;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/cloud/dialogflow/cx/v3/flow.proto";
import "google/longrunning/operations.proto";
import "google/protobuf/empty.proto";
import "google/protobuf/field_mask.proto";
import "google/protobuf/timestamp.proto";

option cc_enable_arenas = true;
option csharp_namespace = "Google.Cloud.Dialogflow.Cx.V3";
option go_package = "google.golang.org/genproto/googleapis/cloud/dialogflow/cx/v3;cx";
option java_multiple_files = true;
option java_outer_classname = "VersionProto";
option java_package = "com.google.cloud.dialogflow.cx.v3";
option objc_class_prefix = "DF";

// Service for managing [Versions][google.cloud.dialogflow.cx.v3.Version].
service Versions {
  option (google.api.default_host) = "dialogflow.googleapis.com";
  option (google.api.oauth_scopes) =
      "https://www.googleapis.com/auth/cloud-platform,"
      "https://www.googleapis.com/auth/dialogflow";

  // Returns the list of all versions in the specified [Flow][google.cloud.dialogflow.cx.v3.Flow].
  rpc ListVersions(ListVersionsRequest) returns (ListVersionsResponse) {
    option (google.api.http) = {
      get: "/v3/{parent=projects/*/locations/*/agents/*/flows/*}/versions"
    };
    option (google.api.method_signature) = "parent";
  }

  // Retrieves the specified [Version][google.cloud.dialogflow.cx.v3.Version].
  rpc GetVersion(GetVersionRequest) returns (Version) {
    option (google.api.http) = {
      get: "/v3/{name=projects/*/locations/*/agents/*/flows/*/versions/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Creates a [Version][google.cloud.dialogflow.cx.v3.Version] in the specified [Flow][google.cloud.dialogflow.cx.v3.Flow].
  rpc CreateVersion(CreateVersionRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v3/{parent=projects/*/locations/*/agents/*/flows/*}/versions"
      body: "version"
    };
    option (google.api.method_signature) = "parent,version";
    option (google.longrunning.operation_info) = {
      response_type: "Version"
      metadata_type: "CreateVersionOperationMetadata"
    };
  }

  // Updates the specified [Version][google.cloud.dialogflow.cx.v3.Version].
  rpc UpdateVersion(UpdateVersionRequest) returns (Version) {
    option (google.api.http) = {
      patch: "/v3/{version.name=projects/*/locations/*/agents/*/flows/*/versions/*}"
      body: "version"
    };
    option (google.api.method_signature) = "version,update_mask";
  }

  // Deletes the specified [Version][google.cloud.dialogflow.cx.v3.Version].
  rpc DeleteVersion(DeleteVersionRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      delete: "/v3/{name=projects/*/locations/*/agents/*/flows/*/versions/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Loads a specified version to draft version.
  rpc LoadVersion(LoadVersionRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v3/{name=projects/*/locations/*/agents/*/flows/*/versions/*}:load"
      body: "*"
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "google.protobuf.Empty"
      metadata_type: "google.protobuf.Struct"
    };
  }
}

// Metadata associated with the long running operation for
// [Versions.CreateVersion][google.cloud.dialogflow.cx.v3.Versions.CreateVersion].
message CreateVersionOperationMetadata {
  // Name of the created version.
  // Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
  // ID>/flows/<Flow ID>/versions/<Version ID>`.
  string version = 1 [(google.api.resource_reference) = {
                        type: "dialogflow.googleapis.com/Version"
                      }];
}

// Represents a version of a flow.
message Version {
  option (google.api.resource) = {
    type: "dialogflow.googleapis.com/Version"
    pattern: "projects/{project}/locations/{location}/agents/{agent}/flows/{flow}/versions/{version}"
  };

  // The state of the version.
  enum State {
    // Not specified. This value is not used.
    STATE_UNSPECIFIED = 0;

    // Version is not ready to serve (e.g. training is running).
    RUNNING = 1;

    // Training has succeeded and this version is ready to serve.
    SUCCEEDED = 2;

    // Version training failed.
    FAILED = 3;
  }

  // Format: projects/<Project ID>/locations/<Location ID>/agents/<Agent
  // ID>/flows/<Flow ID>/versions/<Version ID>. Version ID is a self-increasing
  // number generated by Dialogflow upon version creation.
  string name = 1;

  // Required. The human-readable name of the version. Limit of 64 characters.
  string display_name = 2 [(google.api.field_behavior) = REQUIRED];

  // The description of the version. The maximum length is 500 characters. If
  // exceeded, the request is rejected.
  string description = 3;

  // Output only. The NLU settings of the flow at version creation.
  NluSettings nlu_settings = 4 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Create time of the version.
  google.protobuf.Timestamp create_time = 5 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The state of this version. This field is read-only and cannot be set by
  // create and update methods.
  State state = 6 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// The request message for [Versions.ListVersions][google.cloud.dialogflow.cx.v3.Versions.ListVersions].
message ListVersionsRequest {
  // Required. The [Flow][google.cloud.dialogflow.cx.v3.Flow] to list all versions for.
  // Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
  // ID>/flows/<Flow ID>`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "dialogflow.googleapis.com/Version"
    }
  ];

  // The maximum number of items to return in a single page. By default 20 and
  // at most 100.
  int32 page_size = 2;

  // The next_page_token value returned from a previous list request.
  string page_token = 3;
}

// The response message for [Versions.ListVersions][google.cloud.dialogflow.cx.v3.Versions.ListVersions].
message ListVersionsResponse {
  // A list of versions. There will be a maximum number of items returned based
  // on the page_size field in the request. The list may in some cases be empty
  // or contain fewer entries than page_size even if this isn't the last page.
  repeated Version versions = 1;

  // Token to retrieve the next page of results, or empty if there are no more
  // results in the list.
  string next_page_token = 2;
}

// The request message for [Versions.GetVersion][google.cloud.dialogflow.cx.v3.Versions.GetVersion].
message GetVersionRequest {
  // Required. The name of the [Version][google.cloud.dialogflow.cx.v3.Version].
  // Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
  // ID>/flows/<Flow ID>/versions/<Version ID>`.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "dialogflow.googleapis.com/Version"
    }
  ];
}

// The request message for [Versions.CreateVersion][google.cloud.dialogflow.cx.v3.Versions.CreateVersion].
message CreateVersionRequest {
  // Required. The [Flow][google.cloud.dialogflow.cx.v3.Flow] to create an [Version][google.cloud.dialogflow.cx.v3.Version] for.
  // Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
  // ID>/flows/<Flow ID>`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "dialogflow.googleapis.com/Version"
    }
  ];

  // Required. The version to create.
  Version version = 2 [(google.api.field_behavior) = REQUIRED];
}

// The request message for [Versions.UpdateVersion][google.cloud.dialogflow.cx.v3.Versions.UpdateVersion].
message UpdateVersionRequest {
  // Required. The version to update.
  Version version = 1 [(google.api.field_behavior) = REQUIRED];

  // Required. The mask to control which fields get updated. Currently only `description`
  // and `display_name` can be updated.
  google.protobuf.FieldMask update_mask = 2 [(google.api.field_behavior) = REQUIRED];
}

// The request message for [Versions.DeleteVersion][google.cloud.dialogflow.cx.v3.Versions.DeleteVersion].
message DeleteVersionRequest {
  // Required. The name of the [Version][google.cloud.dialogflow.cx.v3.Version] to delete.
  // Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
  // ID>/flows/<Flow ID>/versions/<Version ID>`.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "dialogflow.googleapis.com/Version"
    }
  ];
}

// The request message for [Versions.LoadVersion][google.cloud.dialogflow.cx.v3.Versions.LoadVersion].
message LoadVersionRequest {
  // Required. The [Version][google.cloud.dialogflow.cx.v3.Version] to be loaded to draft version.
  // Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
  // ID>/flows/<Flow ID>/versions/<Version ID>`.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "dialogflow.googleapis.com/Version"
    }
  ];

  // This field is used to prevent accidental overwrite of other agent resources
  // in the draft version, which can potentially impact other flow's behavior.
  // If `allow_override_agent_resources` is false, conflicted agent-level
  // resources will not be overridden (i.e. intents, entities, webhooks).
  bool allow_override_agent_resources = 2;
}